Bookbinding construction



Dec. 15, 1936. s, sc 2,064,224

BOOKBINDING CONSTRUCTION Filed Aug. 16, 1935 l VENTOR ma ATTORNEYS I F/P /r 724/10 Jab 405 Patented Dec. 15, I936 QFFICE BOOKBINDING CONSTRUCTION Application August 16, 1935, Serial No. 36,469

6 Claims.

This invention relates to improvements in book binding constructions, particularly such as are adapted for use with removable fillers the sheets of which are bound together by a helical wire coil. The improvements relate to the simplicity, cheapness, appearance, and compactness of the binding construction, and particularly to the fiatness with which the book can be opened; as will appear more fully from the following description. The present application is a continuation in part of my prior application Serial No. 20,411, filed May 8, 1935.

Referring to the drawing,

Fig. 1 is an end view of a book constructed in accordance with one form of my invention;

Fig. 2 is a perspective view of a portion or" the binding of the book shown in Fig. l, the filler being removed and the filler binding rod being shown in partially removed position;

Fig. 3 is a detail of aportion of the binding with the wire coil of the filler in place, showing the manner in which it is attached to the binding;

Fig. 4 is a fragmentary top plan view of the open book;

Fig. 5 is a sectional detail of a modified type of binding; and

Fig. 6 is a detail, corresponding to Fig. 3 but with the binding rod in a different position, of the type of binding shown in Fig. 5.

Referring first to the form of book shown in Figs. 1, 2, 3, and 4, the cover I is conveniently made in one piece, formed with a reverse fold or pleat I I as best shown in Fig. 2. To this pleat is secured, as by rivets 12, a U-shaped metallic member I 3 extending substantially completely through the length of the back oi the book and provided with a plurality of slots it. If desired the cover may be made in two pieces having flaps placed in abutting relation to simulate the sides of the pleat H and held in assembled relation by the member [3 supplemented by stitching if desired. The filler l5, which may if desired be provided with inside cover members it which serve to protect the leaves of the filler against injury, is held together by a coiled wire ll passing through holes punched in the leaves and in the present case serving also as a part of the means for holding the filler detachably in the binder. The slots M in the metallic member 13 are spaced apart a distance equal to the pitch distance 18 between the adjacent coils, so that the wire i? can be slipped in place with one coil lying in each of the slots. When the helix has been so placed a fiat metallic binding rod or bar i9 is slipped into place inside of the U-shaped member so as to lie between the inside of the coils of the helix and the inside of the bend of the U-shaped member, as is best seen in Fig. 3 where the bar i9 is shown as inserted partway into its final binding position. The end of the bar is preferably truned at right angles to form a handle 20.

In this construction the metallic member l3 has sufficient rigidity to maintain its straight form and thus to insure a straight path for the insertion of the binding rod Id. The binding action on the wire helix can be made very firm since the lower portion 2i of each coil (Fig. 3) is supported by the bottom of the slots in the two slides of the U at spaced points between which the binding rod engages the wire. A slight bowing of the wire at this point suflicient to clamp the wire firmly in place is readily accomplished as the rod I9 is pushed into place, the leading 20 end of the rod being suitably rounded or tapered as at 22 to facilitate its insertion. It will also be apparent from Figs. 1 and 4 that the book takes up very little excess thickness at its binding margin, and that it opens perfectly fiat due both 25 to the facility with which the cover is opened out at the pleat H and to the well known action of the wire helix as a binding mechanism.

An even simpler construction, lacking however the complete rigidity and some of the finish of appearance of the form already described, is shown in Figs. 5 and 6. In this second modification the cover 25 is provided with a central reverse fold 26 stitched along the line 21 so that to a certain extent it takes the place both of 5 the pleat ii and of the member 53 of the first form. The fold 26 is formed with a series of open-ended slots 28 into: which the helical wire binder 29 of the filler can be inserted in the same manner as before. The retaining member is in this case conveniently made in the form of a wire 30, the leading end of whichis preferably tapered or beveled and the other end of which is reversely folded as at 35 so as to serve as a handle whichwill lie out of the way when 5 the book is assembled. In this case also the cover may if desired be made of two pieces stitched together instead of a single piece with a reverse fold.

I claim:

1. In a book construction, a narrow binding flange having a longitudinal end to end passage just below its upper surface and having spaced slots along one edge to receive spaced coils of a helical binding element, a helical binding element and filler sheets loosely hung on the coils thereof, two cover portions of flexible material extending from the other edge of said flange and hinged at said edge, and a retaining member slidable inside of said longitudinal passage in the flange to removably mount said binding element in the slots of said flange.

2. In a book construction, a single flexible piece of cover material having an upstanding loop sewed therein along a transverse line, spaced slots opening along the top edge of said loop, a coiled wire binding element mounted in said slots with the pitch distance of the wire coils equal to the spacing of the slots, and a. retaining wire lying along and inside said loop and closing the slot openings to retain the coils in position in the slots. 7

3. In a book construction, a cover comprising cover members and a composite central flange including portions of the cover members and a U-shaped metallic member embracing said portions of the cover members and provided with slots opening into the bend of the U, a filler the sheets of which are bound together with a wire binder having a plurality of curved portions spaced apart at distances permitting said portions to pass readily into the slots, and a binding rod slidable inside of the U-shaped member and within said curved wire portions to hold the binder in place in the slots.

4. In a book construction, a U-shaped metallic member having slots opening into the bend of the U, a cover having a reverse fold received within and attached to the open end of the U, a filler the sheets of which are bound together with a wire binder having a plurality of curved portions spaced apart at distances permitting F said portions to pass readily into the slots, and

a binding rod slidable inside of the U-shaped member and within said curved wire portions to hold the binder in place in the slots.

5. In a book construction, a U-shaped metallic member having spaced legs and slots in said legs opening into the bend of the U, a cover having portions thereof received within and attached to the open end of the U, a filler the sheets of which are bound together with a wire binder having a plurality of curved portions spaced apart at distances permitting said curved wire portions to pass readily into the slots, and a binding rod slidable inside of the U-shaped member and within said curved wire portions to hold the binder in place in the slots, the rod being of a size to firmly bind the curved Wire portions by exerting pressure on them intermediate their points of support at the ends of the slots in the two legs of the U-shaped member.

6. In a book construction, a U-shaped metallic member having spaced legs and slots in said legs opening into the bend of the U, a cover having portions thereof received Within and attached to the open end of the U, a filler the sheets of which are bound together with a helical wire coil of a pitch distance to permit the coils to pass readily into the slots, and a binding rod slidable inside of the U-shaped member and within said wire coils to hold the coils in place in the slots, the rod being of a size to firmly bind the coils by exerting pressure on them intermediate their points of support at the ends of the slots in the two legs of the U-shaped member.

FRANK STANLEY SCHADE. 

